Nima Almassi, MD
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Areas of Expertise
Conditions I Treat
- Bladder cancer
- Genitourinary cancers and conditions
My Specialties
- Nerve-sparing surgery
- Urinary diversion
- Radical cystectomy
Get to Know Me
I’m a urologic surgeon who has special training in treating people with genitourinary cancers. This includes:
- Bladder cancer
- Upper tract urothelial cancer (cancers that arise in the ureter and renal pelvis)
- Urethral cancer
- Penile cancer
I’m an expert in many surgical techniques including minimally invasive robotic and endoscopic surgery. I see patients at the David H. Koch Center for Cancer Care at Memorial Sloan Kettering Cancer Center (MSK) in Manhattan and MSK Basking Ridge in New Jersey.
My approach to cancer care focuses on my patient’s values and priorities. It’s important for me to work to achieve the best possible results for them. This starts with developing a relationship based on trust. I prioritize clear, open communication and understanding my patient’s perspective and priorities.
I work to give my patients the best chance at cancer cure while maintaining quality of life. I have a specific interest in organ-preserving treatments for patients. This means that I aim to get the best possible treatment results while keeping the organ intact when possible and preserving function.
I’m also an expert in surgical methods that help maintain quality of life for cancer patients. This includes nerve-sparing surgical techniques that help maintain urinary and sexual function. It also includes surgical techniques that preserve the vagina and its function, which can benefit women with genitourinary cancers. If preserving the bladder is not feasible, I use reconstructive methods that best protect the most natural form of urinary and sexual function.
The treatment of genitourinary cancers is rapidly changing. I work closely with cancer specialists in medical oncology, radiation oncology, radiology, and pathology to develop a personal treatment plan. We work as a team to make sure our patients receive the best possible care.
I'm a urologic surgeon, which is a doctor with special training in surgery on the genitourinary (jeh-nih-toh-YOOR-ih-nayr-ee) (GU) system. This includes the bladder, kidney, penis, prostate, and testicles.
- Associate Attending Physician
Conditions I Treat
- Bladder cancer
- Genitourinary cancers and conditions
My Specialties
- Nerve-sparing surgery
- Urinary diversion
- Radical cystectomy
- Minimally invasive surgery
Education
- Bachelor of Science, University of Wisconsin
- Doctor of Medicine, Medical College of Wisconsin
Residencies
- Urology, Cleveland Clinic Foundation
Fellowships
- Urologic Oncology, Memorial Sloan Kettering Cancer Center
Board Certifications
- Urology
Awards and Honors
- Teacher of the Year, Department of Urology, Cleveland Clinic (2025-2026)
- Michael E. Burt Memorial Award for Clinical Excellence, Department of Surgery, Memorial Sloan Kettering Cancer Center (2020)
- Bruce Hubbard Stewart Award for Humanistic Medicine, Cleveland Clinic Foundation (2018)
Insurance Information
Understanding your insurance options is an important part of managing your cancer care. We have relationships with many common healthcare providers and plans.
In Network Coverage Type
HMO, EPO PPO, POS, Transplant
In Network Coverage Type
PPO
In Network Coverage Type
PPO, POS, EPO, HMO
In Network Coverage Type
HMO
This plan is in-network at our New York sites only.
In Network Coverage Type
HMO, PPO
In Network Coverage Type
HMO, EPO PPO, POS
In Network Coverage Type
Supplemental
In Network Coverage Type
PPO, POS, HMO
In Network Coverage Type
POS, HMO
In Network Coverage Type
PPO, POS, EPO, HMO
Offers a qualified health plan from the Health Insurance Marketplace. Call Emblem to learn more.
In Network Coverage Type
HMO
This plan is in-network at our New York sites only.
In Network Coverage Type
PPO, HMO
In Network Coverage Type
HMO
This plan is in-network at our New York sites only.
In Network Coverage Type
PPO
This is a dual payer plan, which means 2 health insurance companies share this plan. MSK providers are out-of-network with UnitedHealthcare.
In Network Coverage Type
HMO, EPO
Offers a qualified health plan from the Health Insurance Marketplace. Call Fidelis to learn more.
In Network Coverage Type
HMO
This plan is in-network at our New York sites only.
In Network Coverage Type
HMO
In Network Coverage Type
PPO
In Network Coverage Type
EPO, HMO, PPO, POS
Offers a qualified health plan from the Health Insurance Marketplace. Call Healthfirst to learn more.
In Network Coverage Type
HMO
This plan is in-network at our New York sites only.
In Network Coverage Type
HMO, PPO
In Network Coverage Type
PPO EPO
In Network Coverage Type
HMO
Your plan may not cover visits to our New York sites. Please call the number on the back of your insurance card to see what your health plan covers.
In Network Coverage Type
PPO
Your plan may not cover visits to our New York sites. Please call the number on the back of your insurance card to see what your health plan covers.
In Network Coverage Type
EPO
Your plan may not cover visits to our New York sites. Please call the number on the back of your insurance card to see what your health plan covers.
In Network Coverage Type
EPO
Your plan may not cover visits to our New York sites. Please call the number on the back of your insurance card to see what your health plan covers.
In Network Coverage Type
PPO, HMO
Your plan may not cover visits to our New York sites. Please call the number on the back of your insurance card to see what your health plan covers.
In Network Coverage Type
State Government
This plan is in-network at our New York sites only.
In Network Coverage Type
PPO, POS, EPO
In Network Coverage Type
Federal Government
In Network Coverage Type
HMO (City Employee Health Plans Gold and Gold Care Only)
In Network Coverage Type
Supplemental
In Network Coverage Type
PPO/OAP
In Network Coverage Type
PPO, POS, EPO, HMO
In Network Coverage Type
TBD
In Network Coverage Type
PPO, EPO
In Network Coverage Type
PPO, POS, HMO
In Network Coverage Type
State Government
This plan is in-network at our New York sites only.
In Network Coverage Type
PPO, HMO
In Network Coverage Type
PPO, POS
In Network Coverage Type
PPO, POS, HMO
In Network Coverage Type
State Government
Learn more about the insurance plans that participate with MSK.
If you don't have health insurance or are worried that your care may not be fully covered, our financial assistance programs may be able to help.
Health plans can change at any time. Call the number on the back of your insurance card to see what your plan covers. Make sure it covers the MSK location where you’ll get care.
If you have questions about insurance, call us at 646-497-9176.
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Contact and Location
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Colleagues
Doctors at Memorial Sloan Kettering work as teams, with specialists from all different areas. This allows us to consider all your needs together, and to give you the best possible care.
Clinical Trials
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Search clinical trialsResearch and Publications
- Almassi N, Whiting K, Toubaji A, Lenis AT, Jordan EJ, Won H, Regazzi AM, Chen YB, Gopalan A, Sirintrapun SJ, Fine SW, Tickoo SK, Ostrovnaya I, Pietzak EJ, Cha EK, Goh AC, Donahue TF, Herr HW, Donat SM, Dalbagni G, Bochner BH, Teo MY, Funt SA, Rosenberg JE, Reuter VE, Bajorin DF, Solit DB, Al-Ahmadie H, Iyer G. Clinical and Genomic Characterization of Bladder Carcinomas With Glandular Phenotype. JCO Precis Oncol. 2022 Jun;6:e2100392. PMID 35731998.
- Lone Z, Benidir T, Wood A, Campbell RA, Alaghehbandan R, Li J, Haber GP, Eltemamy M, Haywood SC, Weight CJ, Lee BH, Almassi N. Oncologic outcomes of intravesical therapy in the management of nonmuscle invasive bladder cancer with variant histology. Urol Oncol. 2023;42:71.e1-7. PMID 38135626.
- Campbell RA, Wood A, Michael PD, Shin D, Pramod N, Haywood SC, Eltemamy M, Weight CJ, Haber GP, Lee B, Myles J, McKenney J, Nguyen J, Williamson SR, Przybycin C, Alaghehbandan R, Almassi N. Impact of Pathologic Re-Review on Grade, Clinical Stage, and Risk Stratification for Patients with Non-Muscle Invasive Bladder Cancer. Urol Oncol. 2024;42(11):372.e21-27. PMID 38880703.
- Harper S, Remer EM, Almassi N. Re-appraisal of standard of care imaging to identify predictors of treatment outcomes among patients with bladder and upper tract urothelial cancers. Current Urology Reports. 2025;26(1):51. PMID: 40542947.
- Soputro NA, Wang L, Daher K, Al-Bayati A, Watfa M, Younis SK, El-Hussein M, Olivares R, Autorino R, Weight CJ, Kaouk J, Nguyen JK, Almassi N. Intraoperative evaluation of detrusor muscle during transurethral resection of bladder tumour using confocal fluorescent microscopy. BJU Int. 2026; 138 Suppl 1(Suppl 1):S88-S93. PMID: 41672610.
Visit PubMed for a full listing of Dr. Almassi’s journal articles. Pubmed is an online index of research papers and other articles from the US National Library of Medicine and the National Institutes of Health.
See all on PubMedPatient Reviews
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